To begin Lab 10 of Chem 115, students received permission to start the lab procedure after completion of prelab. First, students made a 25.0 mL of a 0.15 M Malonic Acid and 0.20 M Manganese Sulfate Monohydrate solution and labeled it "Solution 1". After the solution was made, a piece of parafilm was used to seal the flask before mixing it well. Next, a 25.0 mL of a 0.20 M Potassium Iodate solution, using 0.080 M sulfuric acid as a solvent, was made. Before adding the acid, students heated about 25 mL of the acid in a 100 mL volumetric flask.…
Types of Macromolecules Lab Report Name: Drasti Patel ID #: 20575017 Partner: Sijia Luo Course: BIOL 130L – 019 Tuesday, 7:30 Room # 151 TA: Ashutosh Patel, Doshina Naila Date of Experiment: September 16, 2014 Date of Submission: September 23, 2014 Introduction: The objective of this lab experiment is to identify different macromolecules by carrying out three different tests such as iodine test, Benedict’s test and the biuret test. These three tests are going to examine different properties of macromolecules such as their bonds, and functional groups to identify the solution as one of the four macromolecules. The iodine test is used to determine the presence of polysaccharides such as starch and glycogen in the solution (Harisha, 2006).…
Biology 15 Lab # 4 Professor Passerini September 23, 2015 Scot Albert Lab #4 Questions 1a,b,c, 2, 3a,b,c, 4, 5a,b,c, 7, 11c, d, e, 12a,b ---------------------------------------------------------- 1- a-They are found primarily in the thylakoid membranes. b-No. Cyanobacteria do not have distinct nuclei.…
In this experiment, identifying the acids, bases, or neutrality of the unknown substance in a specific set are used to find the actual substances. The following sets of substances could have been assigned: Set 1 - Silver nitrate (AgNO3), Manganese(II) nitrate (Mn(NO3)2), Barium nitrate (Ba(NO3)2), Hydrochloric acid (HCl), Sodium Hydroxide (NaOH); Set 3 - Silver nitrate (AgNO3), Barium nitrate (Ba(NO3)2), Hydrochloric acid (HCl), Sulfuric acid (H2SO4), Sodium Hydroxide (NaOH); Set 4 - Silver nitrate (AgNO3), Lead (II) nitrate (Pb(NO3)2), Hydrochloric acid (HCl), Ammonia (NH3), Water (H2O). From the substances above Hydrochloric acid (HCl) is the stronger acid, and Sulfuric acid (H2SO4) and Lead (II) nitrate (Pb(NO3)2 are the weaker acids. If the substance is not an acid nor a base, the substance is neutral. In each set there were three neutral compounds, one acid, and one…
When identifying an unknown substance, there are many tests that can be used to discover what the substance is. When a substance is dissolved into water, it has an ionic or polar bond, but when a substance is dissolved into hexane or ethyl, it has a non-polar bond. This is based on the theory that like dissolves like. Tests such as the pH test, reaction with HCl, and reaction with NaOH can be used to see whether an unknown substance is an acid, base, or neutral. When an acid and a base are combined, a neutralization reaction occurs, and an acid or a base is poured onto a reactive metal, a reaction will occur.…
Materials. Numerous substances in the experiment were used. The most frequently used was the unknown due to the need to test its physical and chemical qualities. When a solution of the unknown was made, 1.000 g of the unknown and 1.0 mL of water was used to make it. To test for the possible ions, 1.0 mL of silver nitrate and 1.0 mL of nitric acid were used for the ion test.…
5. Record the results of the pH of both the known and unknown chemicals in a table. 6. Match the pH of the unknown chemicals to the known chemicals. More than 2 chemicals with the same pH are to be set aside.…
The study of microbiology requires not only understanding the microscopic organisms, but also the understanding of lab techniques and procedures used to identify, control, and manipulate microorganisms. The identification of microorganisms is not only important in microbiology lab, but also in the medical field to identify an agent of a disease that will help treat the patient by using the correct antibiotics to kill off the host. In this unknown lab report, techniques and procedures learned in the microbiology laboratory during the semester that was performed to test ones practical understanding of microbiology. The sole purpose of the unknown lab is to demonstrate understanding of the experimental methods and lab techniques learned during…
Biochemical Unknown I. Introduction Cultural Characteristics or morphology and biochemical tests can be used to identify and classify microorganism. By culturing microorganism in nutrient broth, slants, and on nutrient agar plates, the cultural characteristics or morphology can be determined. In this lab, the test tube 2 was incubated in a nutrient broth. The pigmentation of the tube was yellow. The media for test tube 2 was turbid.…
Given an unknown compound in container 3, solubility tests, cation tests, anion tests, and conductivity tests can be used to determine the various properties of the unknown to then make a positive identification of the unknown. These results will not only show chemical and physical properties but also what the unknown compound might react with to form other compounds. After performing the four anion tests, a positive identification was able to be made showing that the unknown compound contained a chloride ion since a white precipitate was formed from the reaction (Table 1). The sulfate, nitrate, and carbonate tests all yielded negative results when no precipitate was formed. The reaction of the chloride anion is as follows: Cl-…
Dialysis Tubing Nicholas MacLean and Erin Girhiny Wednesday, October 19th, 2016 Mrs. Booth SBI 4U Purpose The movement of different molecules through dialysis tubing was observed.…
The guiding question for the Unknown Substance Lab was: What are the identities of the unknown substance? The purpose of the experiment was to broaden and deepen our understanding of conducting a lab and writing a formal lab report. The experiment itself was also important in applying our knowledge about the physical properties of matter. Based on the results from the lab, the challenge was to determine the identity of unknown substances in comparison to the known substances.…
Using your results, identify the unknown substance(s). (1 T/I) According to my results the unknown substance that had left Mr.Price in a very critical condition is Sodium bicarbonate commonly termed as baking soda. Who committed the crime? (1 T/I)…
A macromolecule is a molecule that contains any "large number" of atoms. There are four main different categories of macromolecules that make up our body: carbohydrates, lipids, proteins, and nucleic acids. (1) Carbohydrates are sugars that store and transport energy. (2) Lipids also store energy and also are signalling molecules. (3) Proteins are linear chains of amino acids that help with the structure, function, and regulation of the body’s tissues and organs.…
Quantification of Iron in Whole Grain Cereal Jacob Rickman and Yasmeen Coan Submitted to: Curt Zanelotti CHEM 1045, Experiment No. 12, April 15, 2016 LABORATORY WRITTEN REPORT Honor Code Signature: _________________ Objective In this experiment, we gained an understanding of the relationship between chemistry and food products while developing and enhancing good lab techniques. We applied dilution concepts to carry out the experiment.…